The difference between palm oil and common oil pressing process

Palm fruit and common oil seeds like peanut, sunflower, soybean, cottonseed are different oil seeds, and need different pressing processes and machines. In the pressing process of palm oil and common oil, it generally requires several steps of pretreatment, pressing, clarification and drying. Below we will compare in detail the difference between palm oil and common oil pressing process.

Palm oil and common oil

Pretreatment process:

The pretreatment of palm oil requires several steps including sterilization, threshing, and digesting.

Sterilization is to steam fresh palm fruit bunches within 24-48hours first, in case FFA increases and FFB gets rancid, to ensure final oil quality is good. Threshing can separate palm fruits from bunches. Digesting is to squeeze part of oil out first, and reduce pressure for the press machine.

Common oil pretreatment process needs to be cleaned, husked, crushed, flaked, and cooked for a few steps.

Cleaning is using cleaning sieve, magnetic drum and destoner to remove impurities in the oil seed like straw, dust, stone and iron impurities. Husking removes shells for oil seeds like peanut, sunflower seed and cotton seed. Crushing is to break large size oil seed into small pieces, making it easier to get oil out. Flaking is making oil seeds into flakiness, easy to extract oil out. Cooking can adjust the temperature and moisture of oil seeds and can get better quality common oil.

Palm oil pretreatment machine and common oil pretreatment machine

Pressing process:

Whether it is palm oil or common oil pressing process, you need to use an oil pressing machine. Because the structure of palm fruit and common oil is different, we specially designed the palm oil double screw pressing machine. For common oil, we use a single screw oil pressing machine to extract common oil.

Palm oil press machine and common oil press machine

Clarification and drying process:

The pressed palm oil and common oil need to be filtered and dried in the same way. Clarification can help us get high quality palm oil and common oil. Drying can remove the moisture in palm oil and common oil, and can extend the shelf life of palm oil and common oil.

If you need cooking oil or palm oil processing machine, please leave your raw material and the input capacity you need, then we recommend you a suitable machine accordingly.